Electric accumulator.



No. 69mm.

. Y Patentad Dec. 3l, I90l. A. POUTEAUX & A. WDLFF.

ELEGTRIC ACGUIIULATUB.

(Application led Apr. 9, 1901.-)

(Nn Model.) l HBL FISE. 1 FISE;

d i i o 1 i 5 51ml 0f a d m //d/ a ,a1 l l 1 @La i 0 'A TM5/m5- we mumsPETERS co. woro-vrjc.. wAsumcnoN. n. c

UNTTnD STATES PATENT OFTICE.`

ALFRED POUTEAUX AND ALBERT VOLFF, OF DIJON, FRANCE.

ELECTRIC AcCuMULA-ron.

SPECIFICATION forming part of Letters Patent No. 690,181, dated December31, 190']l Application led April 9, 1901. Serial No. 55,093. (No model.)

T0 @ZZ whom it 71mg/ concern:

Be it known that we, ALFRED PoUTEAUx and ALBERT W'OLFF, citizens of theRepublic of France, and residents of Dijon, France, have invented a newand useful ImprovementI Relating to Electric Accumulators, whichimprovement is fully set forth in the following specification.

This invention relates to secondary batteries; and the object of theinvention is to provide a light and durable battery of this type; andfor this purpose the invention consists of a secondary batterycomprising an exterior casing, an electrolyte in the same, a pluralityof positive and negative elements immersed in said electrolyte andcomposed each of two perforated parallel plates, perforatedpartition-bars located between and connected to both of said plates anddividing the space between them into a plurality ofcompartments,saidpartition-bars being composed each of two parallelstrips perforated in the direction to afford communication between saidcompartments and cross-bars separating said strips from each other,active material charged into said compartments, but not into the spacesbetween the strips of the partition- Y bars, a conducting-core in eachcompartment,

collecting-bars, one to each element, connecting the cores of the same,a terminal connected with each collecting-bar, and two terminal bars,one connecting all the terminals of the positive and the other all theterminals ofthe negative elements of the battery, as will be fullydescribed hereinafter and finally pointed out in the claims.

In the accompanying drawings, Figure l is a plan View of one of theplates of one of the elements of our improved secondary battery, showingthe partition-bars superposed thereon. Fig. 2 shows an individualpartition-bar of our improved secondary battery. Fig. 3 is a plan viewshowing a plate with the partition bars and cores superposed thereon.Fig. 4 is a side view of two dissimilar ele ments of our improvedbattery, showing the saine connected together, the active material andone core, however, being removed, the core being broken off on line 4et, Fig. 3, from one compartment of the right-hand element for thepurpose of exposing the perforated partition-bar. Figt 5 is aperspective view showing the battery assembled, and Fig 6 is ahorizontal section through two of the elements on line G 6, Fig. 4.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, a indicates one of the plates of our improvedbattery. Each element of the battery is composed of two of these platesconnected together by longitudinal partition-bars e. The plates areperforated over their entire surface, only a small portion, however,being indicated in the drawings as being perforated. T he partitionbarsdivide the space between the two plates into compartments c' c2 c3, andsaid bars are perforated in the direction so as to afford communicationbetween said compartments. Within each compartment, approximately at thecenter of the same, is arranged a longitudinal core m of any suitableconducting material, such as copper, the cores m of each element beingconnected at their projecting ends by a collecting-bar Z), which isprovided with a terminal d. The space between the compartments is filledwith suitable chemical mixture according to the nature of the element tobe formed, said mixture in the form of a paste filling compactly thesaid compartments and also the perforations in the plates and beingfirmly held thereby. The partition-bars c are composed each of twostrips arranged parallel and connected by cross-pieces a at frequentintervals. The space between the two strips of each par= tition-bar isnot filled with the paste, but is open, so that the electrolyte canenter into the same and pass freely into the compartments. Each elementwhen made up is connected with the adjacent element by means ofconnecting-blocks h and connecting-strips t, extending longitudinally ofthe plates and provided with notches t'. When elements to the desirednumber are connected in this manner, they are then'further connected byexterior connecting-bands 7c, and the terminals d of elements ofcorresponding character are all ,connected by a connecting-bar d, fromwhich extends a binding-post f. The so-formed battery is then insertedinto a suitable box or receptacle g, which is properly reinforced. Theelectrolyte is then put in and the receptacle closed.

IOO

tion of the solvent.

For rendering the cell as light as possible the plates a, partition-barse', strips t, blocks h, and bars 7c are preferably made of celluloidcovered with a layer of pure caoutchouc. In order to render the sameperfectly proof against the action of sulfuric acid or nascent oxygen orozone, the caoutchouc is dissolved in a mixture of benzol and amylacetate, the latter substance being employed for the purpose ofsoftening the Celluloid and Causing the caoutchouc to penetrate andadhere strongly to the Celluloid upon evapora- As a cement forconnecting the various parts may be employed a solution of endecanitriccellulose in acetate of Camphorated amyl. As an active material for thenegative, electrode may be employed a mixture of red aad andfinely-reduced coke. The presence o: lhe Coke has the effect of dividingthe material and exposing a large surface to the action of the excitingliquid, so that chemical action takes place more freely throughout theentire mass of material in the element. As an active material for thepositive element sulfid of lead may be used. The electrolyte consists ofan aqueous solution of sulfuric acid of 20 Baume. During the operationof the battery the red lead is converted into'peroxid of lead and thesuld of lead is reduced, yielding sulfureted hydrogen and metallic lead.

Having thus described our invention, we claim as new and desire tosecure by Letters Patentc l. Asecondary battery, consisting of anexterior casing, an electrolyte in the same, a plurality of positive andnegative elements immersed in said electrolyte and composed each of twoperforated parallel plates, perforated partition-bars located betweenand connected to both of said plates and dividing the space between theminto a plurality of compartments, said partition-bars being composedeach of two parallel strips perforated in the direction to affordcommunication with said compartments and cross-bars separating saidstrips from each other,active material charged into said compartments,but not into the spaces between the strips of the partitionbars, aconducting-Core in each compartment, Collecting-bars, one to eachelement, connecting the cores of the same,`a terminal connected witheach collecting-bar, and two terminal bars, one connecting ally theterminals of the positive and the other all the terminals of thenegative elements of the battery, substantially as set forth. v

2. In a secondarybattery, the combination, with two parallel plates, ofa partition-bar located between the same and composed of two stripsperforated in the direction of said plates and separated from each otherby cross-pieces, substantially as set forth.

3. In a secondary battery, an active-material container composed ofCelluloid Coated with a layer of pure caoutchouc, substantially as setforth.

In testimony whereof we have signed this specification in the presenceof two subscribing witnesses.

.ALFRED POUTEAUX. ALBERT WOLFF.

Witnesses:

JEAN KUHUTE, LoN WOLFF.

